1272000 has 112 divisors (see below), whose sum is σ = 4279392. Its totient is φ = 332800.

The previous prime is 1271999. The next prime is 1272001. The reversal of 1272000 is 2721.

It is an interprime number because it is at equal distance from previous prime (1271999) and next prime (1272001).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1272001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23974 + ... + 24026.

2^1272000 is an apocalyptic number.

1272000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139696).

1272000 is an abundant number, since it is smaller than the sum of its proper divisors (3007392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272000 is an equidigital number, since it uses as much as digits as its factorization.

1272000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 1272000 is about 1127.8297743897. The cubic root of 1272000 is about 108.3500302995.

Adding to 1272000 its reverse (2721), we get a palindrome (1274721).

The spelling of 1272000 in words is "one million, two hundred seventy-two thousand".